All devices may be used with 5V logic systems - TTL, Schottky TTL, DTL, and 5V CMOS. The UDN2981A with withstand a maximum output off voltage of 50V and operate to a minimum of 5V. It also integrates input current limiting resistors and output transient suppression diodes and are activated by an active high input. It will sustain 120mA continuously for each of the eight outputs at an ambient temp of +50°C and a supply of 15V under normal conditions.